Video-on-Demand Library

09 September 2026

In this session, Rhys Warham is presenting submissions visualizing the impact of a protocol amendment on trial recruitment and operational efficiency. The expert panel is evaluating visualization choices from bar charts to alternative designs like dumbbell plots. Follow a critical analysis of common pitfalls: redundant labelling, misleading scales, and causality claims without proper context. And gain practical insights on designing for different audiences—executive summaries versus detailed study team reports. All example plots are available on the Wonderful Wednesday blog.


Key Takeaways:

1. How to balance visual hierarchy with information redundancy

2. The importance of distinguishing relative vs. absolute change in risk communication

3. When (and when not) to use different chart types

4. How to account for confounding factors in your visual storytelling.


Plus: Introducing the October challenge on vaccine safety visualization—learn how the same data can tell dramatically different stories depending on how it's presented.
Perfect for: Statisticians, clinical trial professionals, medical communicators, and anyone involved in presenting complex healthcare data. Suitable for intermediate to advanced data visualization practitioners.


See the
Wonderful Wednesday homepage for more detail.


Wonderful Wednesdays are brought to you by the Visualisation SIG. The Wonderful Wednesday team includes Bodo Kirsch, Steve Mallett, Rhys Warham, Lovemore Gakava, Zara Sari, Zachary Skrivanek, Lorenz Uhlmann, Paolo Eusebi, Farzaneh Safavimanesh



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